A04 - SOW.pdf

Cane River Creole National Historical Park

STATEMENT OF WORK:

Cyclic Repair of Structural Components for Two Pigeon Houses

PMIS# 190206

DATED:

July 2020

NATIONAL PARK SERVICE

SOUTHEAST REGION

Cyclic Repair of Roof Components for Two Pigeon Houses SOW CARI

Introduction:

Cane River Creole National Historical Park (CARI) is comprised of two Creole plantations. The Oakland and Magnolia plantations are sites managed under one administration and located just outside the Natchitoches, Louisiana area.

Oakland Plantation, located at 4386 Highway 494 Bermuda, LA 71456, was founded by Jean Pierre Emanuel Prud’homme, who began farming the area in 1785 and received a Spanish land grant in 1789.

Eight generations of his French Creole family lived and worked on this land, managing to keep the physical complex intact for two centuries.

Magnolia Plantation, located at 5549 Highway 119 Derry, LA 71416, was established by Ambrose LeComte II and his wife Julia Buard LeComte in 1835. However, Magnolia’s early history is rooted in mid- 1700s colonial Louisiana. In 1753, Jean Baptiste LeComte I received a land grant on both sides of the Cane River laying the foundation for a cotton plantation unrivaled in the Cane River region.

Because of the integrity of the resources at Oakland and Magnolia, both plantations have been designated as National Historic Landmarks.

Objective:

This contract shall address the roof, exterior finish, and structural components of two (2) pigeon houses located at the Oakland Plantation and one (1) pigeon house at Magnolia Plantation for Cane River Creole National Historical Park (CARI).

Contractor shall install cross bracing inside Oakland Plantation’s East and West Pigeonnier that shall be flush to the interior walls before erecting scaffolding and removing Kingpost and Finial. West Pigeonnier bracing shall be left in place during repairs and contractor shall restore building to plumb and leave bracing installed. East Pigeonnier bracing shall be removed once repairs are complete.

Contractor shall remove the temporary covers at the roof peaks on both buildings, exposing the remnants of the decorative roof finials. Once exposed, contractor shall measure, fabricate replacements, and remove the historic finials and Kingpost intact for cataloguing in Park museum collection. Fabricated replacements shall match the historic profile of the original finials (in consultation with the park) and shall be installed in-kind to sub rafters. Holes at the top of the roof, where the roof meets the finials, shall be patched to match existing roof structure and existing wood shingles.

Replacement finials shall be flashed to the patched and existing roof for waterproofing.

The Oakland Plantation west pigeonnier four panel french doors shall be replaced in-kind with new hinges and locking mechanism suitable for Park padlocks. The exterior finish of doors shall have three coats of limewash while the interior doors shall be stained.

Contractor shall install twelve metal corner wraps on both Pigeon houses at Oakland Plantation provided by Park museum collections staff. Installation shall use existing holes in corner wraps. (See Specific Requirements) Oakland Pigeonniers require interior Bousillage repairs on lower levels. Contractor shall use local ingredients (See Specific Requirements) to fill and repair voids between wood framing on lower levels.

Both east and west pigeonniers at Oakland Plantation and one (1) pigeonnier at Magnolia Plantation shall be cleaned and prepped for three coats of limewash. (See Specific Requirements)

SCOPE:

1. Contractor shall provide all material, equipment, parts and labor required to perform all the work of this contract.

2. No ground disturbance is authorized.

3. All equipment, material and waste removed or generated by work of this contract shall be properly disposed of offsite by the contractor.

4. Contractor shall verify the exterior square footage and quantity of materials needed to complete the tasks identified in this statement of work (SOW).

5. Contractor shall provide a work site and environment that is safe for employees, for visitors to the

Park, and NPS staff. The work area shall be cordon off (if necessary) and secure.

6. Contractor shall leave the worksite clean and free of construction debris.

7. All work shall be performed Monday through Friday from 8:00 am until 4:00 pm. No work shall be performed on weekends or federal holidays without prior approval.

8. The Park will designate contractor, employee parking, equipment storage areas, and access points.

No company signs shall be installed on government property. Smoking and eating shall be performed in areas designated by the Park. Employees shall wear appropriate clothing at all times.

9. Contractor shall notify NPS staff of scheduled site visits to ensure access to secure areas.

10. The Davis-Bacon Act applies for this contract.

Submittals:

Contractor shall submit cut sheets to the COR for material approval prior to use for the following items:

1. Product Submittals (Cut Sheets):

a. Wood material (Kingpost, cross bracing)

b. Fasteners

c. Flashing (galvanized, etc.)

d. Proposed profile of replacement finials matching historic finials

e. Limewash and brownwash (MSDS)

Specific Requirements:

1. Kingposts and Finials:

● East pigeonnier finial is round (see attached photo) with a diameter of roughly 6 inches at top of Kingpost.

● West pigeonnier finial is pineapple in shape without texture and roughly 6 inches in diameter at top of Kingpost.

● Kingpost is 6”x8”x 6’ roughly

● Contractor shall verify all measurements

● Contractor shall confirm actual shape and size of both finials with park staff prior to installation, based on remnant finials and archival materials

2. East Pigeon House metal components:

● Northwest metal corner wrap 92” vertical from bottom of lowest board.

● Northeast metal corner wrap 97” vertical from bottom of lowest board.

● Southwest metal corner wrap 95” vertical from bottom of lowest board.

● Southeast metal corner wrap 92” vertical from bottom of lowest board.

● Southeast and Northeast smaller metal corner wraps installed centered between bottom of lowest board and roofline.

3. West Pigeon House metal components:

● Northwest metal corner wrap 87” vertical from bottom of lowest board.

● Northeast metal corner wrap 96.5” vertical from bottom of lowest board.

● Southwest metal corner wrap 90” vertical from bottom of lowest board.

● Southeast metal corner wrap 95” vertical from bottom of lowest board.

● Northeast smaller metal corner wrap installed centered between bottom of lowest board and roofline. Northwest smaller metal corner wrap placed just above larger one.

4. Bousillage repair:

● Interior Bousillage repairs shall be blended to the historic bousillage using traditional methods overseen by an experienced materials conservator and local bousillage expert.

Finish coat shall consist of clay, water, Spanish moss or horsehair as approved by materials conservator.

● Approximately 90 square feet of bousillage missing on both east and west pigeonniers combined at Oakland Plantation.

5. Limewash:

● Many of the areas to be prepared for repainting retain coatings from the eighteenth, nineteenth and twentieth centuries.

● The contractor shall therefore assume all existing painted/limewash surfaces contain lead, arsenic, or pesticide substances unless tested to show otherwise.

● Take all necessary actions and precautions to assure safety of the public, property, the environment, and the workers in removing and disposing of any existing limewash. This includes compliance with all applicable regulations including, but not limited to, the following:

○ OSHA 29 CFR 1926.62 (Lead in construction).

○ OSHA 29 CFR 1910.134 (Respiratory protection).

○ OSHA Hazard Communication Standard.

● Compliance with all other applicable health, safety and environmental requirements of the government agencies having jurisdiction including, but not limited to:

○ Federal OSHA;

○ Federal Environmental Protection Agency.

● Comply with the requirements of governmental agencies having jurisdiction over this work, including compliance with volatile organic compounds/volatile organic solvent regulations and abrasive surface preparation.

● Loose exterior limewash shall be removed by hand using scrapers and other small tools.

Once cured, the exterior finish coat shall be limewashed with a traditional recipe of lime and water. Finished limewash color shall be white to match the historic appearance of the building.

● Each surface shall be cleaned and prepared as specified. The contractor is responsible for the final appearance and finish. Should any surface be found unsuitable for limewashing, it is the contractor's responsibility to notify the COR of those conditions that if not corrected could affect the coating system. No materials shall be applied to any area or surface that is thought to be unsuitable until these have been satisfactorily addresses. Commencement of work in a specific area shall be construed as acceptance of the surfaces as fit for and proper to receive finish.

● Remove mildew per the following;

o Tools: stiff brush.

o Mix a solution of 3 parts water to 1 part bleach.

o Important: Add the bleach to water only.

o Use application method described above until the surface is visibly wet.

o Use a brush to apply the solution.

● After mildew spores have been destroyed and the stains bleached, rinse with clean water to thoroughly remove the bleach solution. Note: If residue is left on the substrate problems may occur with the finish coat of limewash.

● Allow substrate to dry completely before limewashing.

● Wear protective glasses or goggles, waterproof gloves and protective clothing. Quickly wash off any mixture that comes in contact with your skin. Do not add detergent or ammonia to the bleach/water solution.

● Limewash coats shall be dry to manufacturer's instructions before applying succeeding coats. Prior to each coat of limewash being applied, the contractor shall notify the COR and obtain approval to apply the next coat of limewash.

● St. Astier Natural Limewash three coats with dry time of 4 hours in between coats. No additives (epoxy, paint, acrylics) shall be allowed to be mixed with the limewash recipe of 3:1 ratio or product equivalent in quality and dried color.

6. Doors:

● West Pigeonnier French doors shall be removed, measured, submitted to Park for cataloging, and new doors constructed to match in-kind.

● Approximate measurements are:

o Entire opening 53 ½” x 78” o Left door 27 ½” x 78” o Right door 25 ½” x 78” o Limewash exterior, brownwash interior o Four panel doors

SUBMITTALS:

Contractor shall submit cut sheets to the COR for material approval prior to use for the following items:

Product Submittals (Cut Sheets):

1. Limewash (Make, SDS sheets)

2. Workplan and schedule

3. Equipment

4. Bousillage (ingredients)

5. Lumber and hardware (door material, wood species, fasteners, flashing)

GOVERNMENT-FURNISHED PROPERTY, MATERIAL, EQUIPMENT, OR INFORMATION (GFP, GFM, GFE, OR

GFI):

• Ten (10) historic metal corner wraps as mentioned in “Specific Requirements” items 2 and 3.

Period of Performance:

January 2021 to May 2021

SAFETY:

All work performed on government property shall be accomplished in accordance with OSHA, EPA, Federal, State and local regulations and requirements. Prior to starting work on government property, the contractor shall submit to Cane River Creole National Historical Park (CARI) for approval a copy of their company safety plan pertaining to this particular contract. Although not all inclusive, the safety plan must address at a minimum the following areas:

1) Confined space operations (if required)

2) Scaffold Safety plan

3) Public/visitor safety (barriers/signage, etc…)

4) Traffic safety plan (if required)

5) Trenching/sloping of soil

6) Personal protective equipment to be used

7) Hazardous materials (HAZMAT) to be used

a. Copies of Safety Data Sheets must be provided to CARI

b. Storage of HAZMAT

8) Emergency response protocols

9) Personnel training requirements

10) OSHA DART rate

a. OSHA 300A Summary for last three years

11) Contractor’s Pandemic (Covid-19) plan

Contractor shall use “green” products whenever possible and all HAZMAT must be pre-approved for use by the CARI Collateral Duty Safety Coordinator. The contractor shall be responsible for the safety and security of the site to ensure unauthorized personnel (park visitors & employees) do not enter the construction area.

SECURITY & WORK HOURS:

Contractor shall only perform this work during normal operating hours (8:00am – 4:00pm) from Monday to Friday, unless Park gives approval.

West Pigeonnier

West Pigeonnier Finial

East Pigeonnier

East Pigeonnier Finial

West Pigeonnier Kingpost and Rafters

Bousillage repairs (Oakland West Pigeonnier)

Product Submittals (Cut Sheets):